Ml aggarwal solutions
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Rational Numbers | Rational Numbers Exercise 1.6

Question 4

A person earns Rs 100 in a day. If he spent Rs 14 \frac{2}{7} on food and Rs 30 \frac{2}{3} on petrol.

How much did he save on that day?

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Given

A person’s earning in a day = Rs 100

Money spent on food = Rs 14 \frac{2}{7}= Rs 100 / 7

Money spent on petrol = Rs 30 \frac{2}{3}= Rs 92 / 3

The savings of a person is calculated as follows:

Savings = Rs 100 – {(100 / 7 + 92 / 3)}

= Rs 100 – {(300 + 644) / 21}

On further calculation, we get

= Rs 100 – (944 / 21)

= (2100 – 944) / 21

= Rs 1156 / 21

= Rs 55 \frac{1}{21}

Hence, a person saved Rs 55 \frac{1}{21} on that day.

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Question 4

A person earns Rs 100 in a day. If he spent Rs 14 \frac{2}{7} on food and Rs 30 \frac{2}{3} on petrol.

How much did he save on that day?

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Given

A person’s earning in a day = Rs 100

Money spent on food = Rs 14 \frac{2}{7}= Rs 100 / 7

Money spent on petrol = Rs 30 \frac{2}{3}= Rs 92 / 3

The savings of a person is calculated as follows:

Savings = Rs 100 – {(100 / 7 + 92 / 3)}

= Rs 100 – {(300 + 644) / 21}

On further calculation, we get

= Rs 100 – (944 / 21)

= (2100 – 944) / 21

= Rs 1156 / 21

= Rs 55 \frac{1}{21}

Hence, a person saved Rs 55 \frac{1}{21} on that day.

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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